body {
    font-family: Arial, sans-serif;
    text-align: center;
}

#app-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
}

.app {
    width: 200px;
    margin: 10px;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    text-align: center;
}

.app a {
    display: block;
    margin-top: 10px;
    text-decoration: none;
    background: blue;
    color: white;
    padding: 5px;
    border-radius: 3px;
}